5385981951 has 24 divisors (see below), whose sum is σ = 9281966640. Its totient is φ = 3077703216.

The previous prime is 5385981947. The next prime is 5385981959. The reversal of 5385981951 is 1591895835.

It is a happy number.

5385981951 is a `hidden beast` number, since 5 + 38 + 598 + 19 + 5 + 1 = 666.

It is not a de Polignac number, because 5385981951 - 2² = 5385981947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5385981959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2034196 + ... + 2036841.

It is an arithmetic number, because the mean of its divisors is an integer number (386748610).

Almost surely, 2^5385981951 is an apocalyptic number.

5385981951 is a deficient number, since it is larger than the sum of its proper divisors (3895984689).

5385981951 is a wasteful number, since it uses less digits than its factorization.

5385981951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071060 (or 4071047 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 54.

The square root of 5385981951 is about 73389.2495601365. The cubic root of 5385981951 is about 1752.8912153924.

The spelling of 5385981951 in words is "five billion, three hundred eighty-five million, nine hundred eighty-one thousand, nine hundred fifty-one".